DIY申请Employer Identification Number (EIN) 什么是EIN? An Employer Identification Number (EIN) is also known as a Federal Tax Identification Number, and is used to identify a business entity. Generally, businesses need an EIN. 在报税、银行开户、雇佣员工的时候,都需要EIN 对于一个人不在美国的外国人来…